Windows Users: Click on an image link. When the image comes up to the size you've chosen, with the right mouse button, select "Set as Wallpaper" to save the poster as your desktop background image, or "Save Image As..." to save the poster onto your hard drive.

Macintosh Users:
Click on an image link. When the image comes up to the size you've chosen, right click to save the image. Go to the image file on your computer, right click and select "Set Desktop Picture" to save the poster as your desktop background image.